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defrag010

3.4L L28 stroker

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I just heard back from someone that a sonic test on a V57 block showed 3.7 mm of wall on a stock bore.  That's bad news for using a V57 block.  You seem to have the only block that has taken a 89 mm bore!

My brother in law just tested a v57 here in NZ and it was around 3.5-3.7mm wall. Bit disappointing as we were hoping to make 1 each. V57 motors are a bit more common in NZ.

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Yes.  NZ is where I have been looking to source them.  Any chance your sonic tests aren't accurate? And just so we are on the same page, 85 mm is the stock bore, correct?  3.5 mm and the requirement to run no less than .120" inch wall thickness means you couldn't bore that block more than about .010" inches?  Just seems to fly in the face of logic that it could take so little.

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Yes. NZ is where I have been looking to source them. Any chance your sonic tests aren't accurate? And just so we are on the same page, 85 mm is the stock bore, correct? 3.5 mm and the requirement to run no less than .120" inch wall thickness means you couldn't bore that block more than about .010" inches? Just seems to fly in the face of logic that it could take so little.

I'll take some photos today.

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the block is a v57, crank still has v07 on it. maybe they just updated the block?

My brother in law got it from a mat who had a bunch of them as spares for some LD converted vehicle he has/had. So no history on its origins.

 

You can see from the photos that there is a large gap between the cylinders. there is a bit of wire between 1-2-3 and 4-5-6, must be from casting to keep the cores in line.

 

Also some photos of the crank next to a modified rb30 crank.(modified for another engine, but using as a test fit here)

 

now lots of photos cos every body loves photos - all photos have been halved in size. i can upload more detail if requested

please excuse the amateur photos, im an amateur

 

20160717_101706_zpsuawev4mm.jpg

 

20160717_101712_zpscfw4jtdk.jpg

 

20160717_101728_zpsntfajdb4.jpg

 

20160717_101805_zpsbgls0iv7.jpg

 

20160717_101844_zpsu4mv5s3u.jpg

 

20160717_101902_zpsgjhcyinv.jpg

 

20160717_101925_zpspnmxdojv.jpg

 

20160717_101931_zpstnyfthka.jpg

 

 

 

between 5-6

 

20160717_101939_zpsouky630d.jpg

 

 

 

between 4-5

 

20160717_101946_zpsgk12rrxd.jpg

 

 

 

between 3-4

 

20160717_102007_zpse6caob6f.jpg

 

 

 

between 2-3

 

20160717_102017_zpskwmsqwsh.jpg

 

 

 

1-2

 

20160717_102022_zps98tgb2jq.jpg

 

Crank photos

 

20160717_102141_zpsm95oghi6.jpg

 

20160717_102148_zpsxsuska8y.jpg

 

20160717_102208_zpskyoz0cas.jpg

 

20160717_102232_zpszdtrqhs8.jpg

 

 

and some measurements because everybody on the internet tells the truth! haha

 

20160717_102437_zpsaieh0dna.jpg

 

20160717_102446_zpsyfinrocw.jpg

 

 

dont get upset by the modified rb30 crank. its back yard spec and it didnt fail

Edited by fraz

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Twistex, that's one killer engine! It was mentioned it another thread that the LD block doesn't clear the hood with out mods. How did you get yours to fit? Would a cowl induction hood work? I'm scowering every forum and car classified listing on the web for an ld28 crank but now I want the block too!

 

What CR does that combo give and with what head? Have you had it Dyno'd?

 

Excuse me while I wipe the drool off my chin!

I have Crank 3 of them

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